1. Ph.D. Student, School of Natural and Built Environments, Univ. of South Australia, Adelaide, SA 5000, Australia.
2. Associate Professor, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, Rolla, MO 65409(corresponding author).
3. Head of Civil Engineering, School of Natural and Built Environments, Univ. of South Australia, Adelaide, SA 5000, Australia.